Recent content by princessfrost

We recall that Z is the set of all integers. For each i, j in Z, let f(i,j) be the larger of the two integers i and j. Do these remarks define a function? If so, what are the domain and the image? I'm not sure how to do this. I believe that the remarks do define the function. But I don't know...

ok i got it. thank you sooo much for your help! i really appreciated it! :)

Mountaineers often use a rope to lower themselves down the face of a cliff (this is called rappelling). They do this with their body nearly horizontal and their feet pushing against the cliff. Suppose that an 82.5 kg climber, who is 1.54 m tall and has a center of gravity 1.3 m from his feet...

A 10,500kg railroad car travels alone on a level, frictionless track with a constant speed of 15.0 m/s. An additional 5,000kg load is dropped from a tower onto the car. What will then be its new speed? 2. Homework Equations Momentum of conservation: m1i+m2i=(m1+m2)vf 3. The...

is it 11/16mL^2 then?

Small blocks, each with mass m, are clamped at the ends and at the center of a rod of length L and negligible mass Compute the moment of inertia of the system about an axis perpendicular to the rod and passing through a point one-fourth of the length from one end. Express your answer in...

Ok. so how about: 1/2mv^2= 1/2 kx^2 F= - k x where F= mg = (0.150-) (9.80m/s2) F = 1.47 N 1.47 N= -k ( - 0.050 ) k = 1.47N/0.050m k = 29.4N/m then: v22 = v12 - 2gh, where v1 = 0 and h =- 30 cm = - 0.30m v22 = -...

A 0.150-kg frame, when suspended from a coil spring, stretches the spring 0.050 m. A 0.200-kg lump of putty is dropped from rest onto the frame from a height of 30.0 cm. Find the maximum distance the frame moves downward from its initial position in meters. First I found the spring...

for your x i got .055543. try that and see if it works. I did it how you had it up there and that is what I got. I did this on my homework yesterday and got it right so it should be right. :)

Thank you soo much! I got it. I thought you had to have the KE as 1.55J +778J on the left hand side of the equation. Thats why i was getting it wrong. But thank you!

vertical height. Please help! A 12.0 g rifle bullet is fired with a speed of 360 m/s into a ballistic pendulum with mass 6.00 kg, suspended from a cord 70.0 cm long. Compute the vertical height through which the pendulum rises in cm. How would you find the vertical height? I have the...

You are given vectors A= 4.7i - 7.0j and B= - 3.2i+ 6.9j . A third vector C lies in the xy-plane. Vector C is perpendicular to vector A and the scalar product of vector C with vector B is 16.0. What is the x-component of vector C? What is the y-component of vector C? I'm not sure...